Muntz metal is a copper alloy known for its yellowish color and high resistance to corrosion. It was first patented in 1832 by George F. Muntz in Birmingham, England, using the composition of 60% copper, 40 % zinc, and allegedly a few traces of iron as an alternative to expensive heavy copper. This alloy is noted to be considerably stronger, harder, and more rigid than other brass types and forms. Muntz usually undergoes blanking, bending, forming, forging, pressing, shearing, hot heading, and upsetting, before the yellow metal is finished. The process is made even more complicated by the unique way that the metals are blended at different times.
Where is Muntz metal used?
The alloy is commonly used in the architecture and industrial industries, but can also be used for decorative hardware. In architecture it is ideal for door frames, decorative materials, architectural panels, architectural trims, heavy plates, and even hardware. For industrial use it is commonly found in springs, electrical switches, condenser tubes, valve stems, sockets, tubes, large nuts and bolts, brazing rods, condenser plates, hot forgings, heat exchanger tubes and other fasteners. It is a popular choice most especially in the shipping industry because of its lightweight but durable property.